Most polearms come with a swing and thrust damage number, but while on horseback, the default attack seems to be only thrust. How do I swing a polearm while on horseback?
It seems that most polearms in the game do not support a swing attack while mounted. The only such pole arms that allow for 2 handed swings are the hafted blades and their variants. These are the same weapons that the Khergit lancers sometimes use, which is how I noticed their uniqueness.